Date: Tue, 4 Jul 2023 12:07:14 -0700 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-ports@freebsd.org Cc: freebsd-arm@freebsd.org Subject: More swap trouble with armv7, was Re: -current on armv7 stuck with flashing disk light Message-ID: <ZKRt4ryCGyv9n%2BQ/@www.zefox.net> In-Reply-To: <ZJsZiQGs0QlHhzTV@www.zefox.net> References: <ZJpFqAnnKPq/XmxJ@www.zefox.net> <A91FF89C-2BAA-4E93-96FA-C75C6FA4A0A0@yahoo.com> <ZJsOTzp%2Bb7O2%2BbhQ@www.zefox.net> <E1670A16-2F8E-4E94-A44C-DF7886233F62@yahoo.com> <066FD282-1637-448C-99FF-BA62718386F0@yahoo.com> <ZJsZiQGs0QlHhzTV@www.zefox.net>
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On Tue, Jun 27, 2023 at 10:16:57AM -0700, bob prohaska wrote: > On Tue, Jun 27, 2023 at 09:59:40AM -0700, Mark Millard wrote: > > > > > > If you want to identify system hangs, please > > > put back: > > > > > > vm.swap_enabled=0 > > > vm.swap_idle_enabled=0 > > > > > They're reinstated now, but I don't want to disturb the system > while it seems to be building world acceptably. > Reinstating vm.swap_enabled=0 vm.swap_idle_enabled=0 and limiting buildworld to -j3 allows buildworld to complete successfully in 1 GB of swap. Meanwhile, attempts to compile sysutils/usbtop using poudriere still cause swap exhaustion while compiling /devel/llvm15 even with 2 GB of swap allocated. The messages are Jul 4 11:18:48 www kernel: pid 1074 (getty), jid 0, uid 0, was killed: out of swap space swap blk zone exhausted, increase kern.maxswzone swblk zone ok IIRC the "increase kern.maxswzone" is unhelpful, if not impossible. The "swblk zone ok" seems new. >From the gstat output near peak swap use the system wasn't I/O bound, the disk was less than 25% busy at the time of the first OOMA kill. Eventually it was possible to log in on the serial console and run top: 33 processes: 1 running, 29 sleeping, 3 zombie CPU: 0.0% user, 0.0% nice, 10.6% system, 0.2% interrupt, 89.2% idle Mem: 139M Active, 8256K Inact, 252M Laundry, 221M Wired, 98M Buf, 292M Free Swap: 2048M Total, 1291M Used, 756M Free, 63% Inuse PID JID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 40719 0 root 1 20 -20 0B 8192B swzonx 0 0:12 9.15% cron 40717 0 root 1 20 -20 0B 8192B swzonx 0 0:34 9.08% sh 40709 0 root 1 20 -20 0B 8192B swzonx 0 0:38 9.01% sshd 40720 0 root 1 20 -20 0B 8192B swzonx 3 0:13 7.47% sh 40721 0 bob 1 20 0 6608K 2600K CPU1 1 0:00 0.32% top 25761 0 bob 1 20 0 14M 6136K select 0 0:02 0.03% sshd 25852 0 root 1 20 0 4668K 1648K ttyin 1 0:01 0.03% tip 1237 0 root 1 20 0 5820K 1540K wait 1 0:12 0.00% sh 25381 0 root 1 23 0 14M 5868K select 1 0:01 0.00% sshd 1030 0 root 1 24 0 13M 2416K vmbckw 1 0:00 0.00% sshd 12715 0 root 1 68 0 5820K 1660K wait 0 0:00 0.00% sh 12710 0 root 1 20 0 5820K 1556K piperd 1 0:00 0.00% sh 929 0 root 1 20 0 5356K 1256K select 3 0:00 0.00% syslogd 1014 0 root 1 20 0 5124K 1356K nanslp 2 0:00 0.00% cron 25770 0 bob 1 36 0 6844K 3116K pause 1 0:00 0.00% tcsh 25794 0 bob 1 24 0 5380K 2188K wait 2 0:00 0.00% su 39626 0 root 1 20 0 5424K 2404K wait 2 0:00 0.00% login 40635 0 bob 1 20 0 6824K 3272K pause 1 0:00 0.00% tcsh 25820 0 root 1 21 0 5608K 2204K wait 0 0:00 0.00% sh 25851 0 root 1 20 0 4668K 1656K ttyin 3 0:00 0.00% tip 40454 0 root 1 24 0 4636K 1780K ttyin 3 0:00 0.00% getty I'll let it go for a while to see if poudriere notices it's failed and cleans up. At the moment /boot/loader.conf contains # Configure USB OTG; see usb_template(4). hw.usb.template=3 umodem_load="YES" # Disable the beastie menu and color beastie_disable="YES" loader_color="NO" vm.pageout_oom_seq="4096" vm.pfault_oom_attempts="3" vm.pfault_oom_attempts="120" vm.pfault_oom_wait="20" kern.cam.boot_delay="20000" vfs.ffs.dotrimcons="1" vfs.root_mount_always_wait="1" filemon_load="YES" /usr/local/etc/poudriere.conf contains USE_TMPFS=no NOHANG_TIME=28800 MAX_EXECUTION_TIME_EXTRACT=14400 MAX_EXECUTION_TIME_INSTALL=14400 MAX_EXECUTION_TIME_PACKAGE=432000 ALLOW_MAKE_JOBS=yes MAX_JOBS_NUMBER=2 MAKE_JOBS_NUMBER=2 Do these settings look reasonable? Thanks for writing! bob prohaska
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